Black Diamond

Twilight stirred from her sleep, trying to open her eyes she softly smiled and gave Rarity a snuggle only to find that her friend wasn't there. She leapt to her hooves checking everywhere she could as her still sleepy head swirled around with the thoughts of what could have happened.
"Rarity! Where are you?" Then all of a sudden she was distracted by laughter from outside. Twilight rushed to the window looking out to see a strange young unicorn running around the near by trees and laughing. "Strange, Rarity must be out there with her somewhere." Wiping the sleep from her eyes she yawned stretching out her hind legs before heading downstairs as the laughter carried on. That's when Twilight realised that she could only hear one voice and headed straight for the front door.

Twilight stood observing the steel blue unicorn with a white and purple mane with a length which could rival princess Luna's, was running around the trees all out of breath and laughing. Twilight watched her a few moments longer. "Ahem, excuse me... I'm looking for my friend Ms Rarity! Have you seen her?" The unicorn stopped in her tracks panting trying to catch her breath. "Well sure thing Miss, she's right over here!" Twilight looked across at the few trees and surrounding foliage as the young unicorn took off again. "Rarity! Are you out there? Please I need to see you! Twilight was growing more and more anxious by the second. Stop playing games I want to see my friend! Now!

The strange unicorn stopped and trotted out from behind a hedge catching her breath. "Can you not see her Miss? Just take a look over here..." She slowly turned to her left with a hundred yards stare pointing her hoof into the distance. That's when Twilight saw...on the unicorns rump was a black diamond cutie mark. Twilight's face twisted with confusion. "Rarity? Is that...you in there?? She called out to the estranged blue pony.
The unicorn laughed. "Oh Twilight, if you could see your face right now!" She cantered over to her shocked friend who was standing in the doorway. She watched Twilight still trying to process everything. "That's why I left you sleeping, darling. I got quite the shock myself upon waking up, so I thought I'd come outside and play."

Twilight stood aghast, looking around expecting Rarity to come out from somewhere and tell her that it was all a joke. The new Rarity looked at Twilight with concern. "Twilight dear, hows about we go inside and discuss this properly over some tea?" Twilight looked at her. "Coffee.... lot's of coffee." Her belly growled. "And waffles." They softly smiled as they headed inside.
Over breakfast Rarity explained to Twilight. "You see darling, I awoke early morning for the bathroom and fell off the bed as I'm now the size of a foal, however being half asleep in the dark I didn't really realise until I was on the toilet before I noticed that I was a different colour too." Twilight took a gulp of coffee. "So you're telling me that your body, mane and your height have drastically changed, however you're still Rarity...err I mean you inside?" Rarity smiled wide and nodded "Mm hmm." Before taking a sip of tea whilst joyfully swinging her hind legs back and forth.

Twilight looked on observing her a few moments. So it's real then...the potion actually works." Rarity sat smiling. "I'm sorry if I scared you Twilight, I scared me a little bit too." She stated as her smile faded.
Twilight put her hoof on hers. "Don't worry about it, we'll laugh about it one day. I mean I thought you would just change back to you as a foal but this Rarity....wow! Well come on girl, give me a twirl! Let me get a proper look at you!" She chuckled. The young unicorn hopped of her seat and stood smiling before spinning quickly around in a complete circle. Twilight laughed. "Ohh c'mon, properly now." There was a nervous glance in Rarity's eyes her new body was new to her to even she hadn't seen it all yet.

Twilight gave a comforting smile reassuring her. "You look as beautiful as ever, now give me a twirl." Rarity bit her lip and stepped slowly around in a circle showing her new body off. Her deep purple and white mane and tail were long and vibrant, her steel blue coat was plush and looked so warm. On her hooves were black markings as if she was wearing elegant shoes but her bright blue eyes were still hers. Twilight clopped her hooves together smiling and cheering her. "Yay! Who's a big girl?" Rarity shyly turned her head to one side. "I am, I suppose." She said quietly anxiously twisting her hoof into the floor. Twilight smiled wide. "Oh Rarity, I don't think I've seen this vulnerable side to you.

So have you thought about what you'd like to do today?" Rarity looked around a moment. "I'm not to sure, Twilight..." Twilight cut in "Well if you tidy your room and do your chores I'll take you to Cupcake Corner for tea." She teased.
Rarity huffed crossing her hooves. "Hmph! I can go to Cupcake Corner whenever I want!"
Twilight giggled. "You know, you're quite cute when you're angry. Okay then, since you don't have anything in mind...would you like to have a girly day with me?" She could see Rarity thinking about it. "I promise not to tease you, Pinkie promise." Rarity thought a moment just to keep Twilight waiting those few extra seconds. "Okay, but just remember I'm a big girl, I have my cutie mark now." They both giggled.

Twilight stood up and used her magic to put their cups and plates into the sink. "You're washing those up later, young lady." Twilight said sternly. She then took a pen and notepad "So we've already had our breakfast, check. Now I'm thinking we go...shopping!" She smiled. Rarity looked around the room anxiously. "Okay then. I'll just grab my bag." She trotted to the front door get it. "So this is it. The day I've been waiting for, for the past two weeks and now it's finally here, I'm just so nervous."
Twilight put her hoof on the foals shoulder. "Alright Rarity, I just need you to do one thing..." Rarity gave her an inquisitive look. "What's that Twilight?"
Twilight smiled looking her straight in the eyes. "I need you to take a deep breath and leave the old you right here, on this doorstep and embrace your inner filly. Don't be worried or scared either about what other ponies might think or be scared of the consequences. Just be sure to be happy and kind to yourself." Rarity hugged into Twilight as she started sobbing. "Oh dear, what's wrong?" Twilight asked hugging into the small filly trying to console her.
Rarity sniffled. "Nothing at all. Thank you Twilight, that was just so lovely what you just said there. Don't worry I'm not upset, I'm just so happy...I think it's just my adolescent hormones kicking in." She started to giggle through her tears.
After a few moments she let go of Twilight and tidied herself up drying her eyes before putting her saddlebag on and opened the door.

Rarity turned to Twilight. "I was thinking about what you said about leaving the old me on this doorstep. Then in that case, I would like you and everypony else to call me...Black Diamond." Twilight looked at the young filly a few moments. "Black Diamond huh? Hmm, it suits you. Okay Black Diamond, lead on." The filly smiled and headed outside as Twilight shut the door. "Actually Black Diamond...how's your magic? Can you still lock this door?" She wondered. Black Diamond trotted over with confidence, aiming her horn at the door. She squinted as she strained to use her spell but her horn just sparkled and fizzled. "Oh my, Black Diamond. Seems you have the magic of a filly too. Uhm, can you lift that stick over there?" She watched as her friends young horn burst into life again lifting the stick with ease. "Well done! It looks like you're magic is the strength of your filly self, but don't worry to much about it. I'll lock the door for now and you just keep practicing with that stick. Now let's go have some fun and also I want to find out more about my new friend Black Diamond."

The girls laughed and played before they finally trotted into Ponyville. "Wow, Black Diamond, you've got so much energy. I can't keep up with you." Twilight giggled as she caught her breath finally catching up. "So Black Diamond, where do you want to go first?" The young filly bounced around buzzing on adrenaline smiling wide excited on making the next move. "Hmm how's about the market?" Twilight smiled widely. "What are we waiting for then?" She grinned as they walked side-by-side towards the market place.
Once there, they looked around the various stalls before they heard Applejack calling out. "Hey Twilight! Over here! Who's ya new friend there?
Twilight smiled nervously turning towards the foal beside her. "Remember, you're Black Diamond now. You don't know her and she doesn't know you. Just play it cool and follow my lead. Okay?" Black Diamond nodded keeping a slow gait behind Twilight trying to look inconspicuous.
"Hey Applejack! How are you? This young filly is Black Diamond. She's temporarily staying here in Ponyville whilst her parents are on business here." Twilight turned to the filly before continuing. "Black Diamond, this is my good friend Applejack. She lives and works at Sweet Apple Acres, which is where she gets these delicious apples from." She smiled wide taking an apple from the stall.

Black Diamond stepped forward. "It's nice to meet you Miss Applejack." She politely said. "Well it's sure nice to meet you too young 'un! Mah Apple Bloom would just love to meet you...she's mah little sister n she's about your age too. When you get a minute call round the farm n meet her!" Applejack put her hoof to her face. "Ah just remembered, Rarity came by yesterday n asked me tah watch her Sweetie Belle while she's away on business. Ah almost forgot cos ah was...uh... shall we say indisposed with a certain stallion an' she caught us red hooved. Ahh tell yas, Rarity's face was a picture! It was a hoot!" She laughed out as she continued. "Ah don't get whut Big Mac see's in her. He says he likes tha way she talks all posh like...but don't get me wrong ah lover but she's got such a stick up her butt ah feel like shakin' her to help her loosen up ya know. Black Diamond was gritting her teeth trying to keep her cool as Twilight anxiously changed the conversation. "Oh my Applejack sounds like you had quite the day. Say Black Diamond, that's a lovely offer from Applejack giving you the chance to make new friends, isn't it?"

Black Diamond smiled through gritted teeth. "Yes, just wonderful, I'll try and call by sometime...thank you." She managed to say without losing her temper. Applejack tipped her hat to her. "Say there, take this gift basket as a welcoming gift. It's full of fresh fruit an veg from mah family's farm, you'll find a bushel of apples, Zap apple jam, apple sauce and a few more tasty goodies in there including a bottle of apple cider for your folks too."
Twilight picked up the alcohol from the hoof woven basket in her magic and put it in her own satchel. "I best hold on to this, being the responsible adult n all." She giggled at the filly beside her who did not look amused. "What do you say Black Diamond?" Black Diamond swallowed hard smiling as warmly as possible. "Well thank you Miss Applejack. That's very kind and thoughtful of you."

Applejack smiled warmly."Welcome to Ponyville Black Diamond. Ah hope you enjoy your stay n just call me Applejack I ain't tha lady Rarity. Ah tell ya whut sugar cube. Why don't cha come over for dinner this evening? Ya can meet tha family an ahl introduce yah ta Rarity's lil sister too." Black Diamond glanced up to see Twilight giving her a nod of encouragement. "Alright Applejack, I'll be happy to join you for dinner, thank you."
Applejack smiled wide. "Well it's settled then, come by round six and dinners at seven! Shall ah set a place for you Twilight?" Twilight frowned. "Oh I would have loved to Applejack, but I have duties to catch up on. I've just been so busy taking care of the arrival of Black Diamond and her parents, err...raincheck?"
Applejack playfully hoofed her shoulder. "Sure thing sugar cube! Stop by anytime you're always welcome."
"Thank you Applejack. I'll be sure to drop by as soon as I can, just be sure to tell granny smith to keep a slice of that amazing apple cobbler of hers to one side for me!" She said almost licking her lips. "Well Applejack, thanks again for everything, but we best be on our way. I promised this one a girly day." Applejack tipped her hat and smiled. "Well both of y'all have a great day! And you little Missy, I will see you at six pm sharp n be sure ta come hungry K?" Black Diamond nodded smiling. "I look forward to it and thank you again for the gift basket my folks will be so grateful." Applejack smiled to Twilight. "Well, if all fillies could be as courteous as this one huh? I think Rarity will get on swell with this one." She chuckled as they said their farewells.

"Phew, I did not expect that. Haha what did she mean when Applejack said that you...er Rarity caught her in a 'compromising' position. Black Diamond rolled her eyes and blushed. Well I may have walked in on her going down on Big Mac." Twilight laughed. "Nooooo! Seriously? Is he as big as they say??" Black Diamond tried not to blush "Twilight! Please I...." The princess cut in. "Ah ah...no. You are not a lady. You are a young filly on the cusp of marehood. A filly who wants...neigh, needs to do things differently from which the lady Rarity does. Isn't that the whole point of doing this?" Black Diamond looked up at the Twilight's stern face and softly nodded in defeat. "You're right Twilight, I'm being silly 'old habits' and all that. Let's start again and I'll tell you about the biggest cock that I've ever seen." She said with a wild smile. "Twilight gasped. "Mind your tone young lady..." She leaned in. "It's to loud." She winked before walking them to a quiet spot away from the busy market. "Now then, tell me everything about yesterday in every explicit detail." She giggled as they walked on together.

Later...

Black Diamond was sat at the table with her hot chocolate listening to Twilight in the distance. "Hello? Equestria to Black Diamond. Are you still there?." Black Diamond looked up from her hot drink "I'm sorry Twilight. Just the day catching up with me I suppose...it is lovely in here a little piece of tranquility." Twilight smiled in agreement as she sipped her tea. "That it is. So Black Diamond since we have a a little more time left I thought I'd take you to the spa as a treat. So drink up and we'll head over there."
Black Diamond smiled "Well thank you Twilight that's very kind of you." She started drinking up her drink.

Twilight watched the filly come back to life. "With all that talk of Big Mac earlier I thought I'd treat us to facials...." Black Diamond choked on her drink spurting chocolate everywhere, coughing as it streamed from her mouth and nose. Twilight laughed as Black Diamond coughed catching her breath using her magic to wipe her watering eyes and face as onlookers gasped and giggled. "Twilight you're so embarrassing!" She scolded quietly. Twilight sat forward leaning her chin on her hoof smirking at her disheveled friend. "Yeah. Am I the best big sister or what?" She grasped a napkin in her magic and started wiping Black Diamond's face for her. "Twilight I'm not a little filly!..." Twilight giggled. "Well ya kinda are. But you're right your a big girl now so I'll leave you to it." She said placing the napkin down on the table before taking a sip of her tea.

Black Diamond frowned. "I'm sorry Twilight, I didn't mean to bite your head off. It's just I've been like this for years and unlike my physical appearance, I'm not going to change overnight unfortunately...but it isn't for the want of trying. Believe me I am."
Twilight took her hoof in hers. "I know you are. But you're Black Diamond now and you've been invited to the Apple family dinner. So I say go meet and greet. Watch your P's and Q's. Then at the end of the night sneak out some apple cider with the girls and I dunno look for some colts or pay Big Mac a visit and unwind the way a filly your age should." Black Diamond smiled trying not to fill up. "How is it you always know what to say." She rhetorically asked. Twilight smiled. "Big sisters always do."